Axial-Flow Control Valve Layout for Low Pressure Loss
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Solution Overview
Problem
Existing motor-driven axial flow control valves are complex in structure and not compact, leading to increased flow resistance and stagnating zones, which result in higher pressure loss and noise.
Innovation Solution
A motor-driven axial flow control valve with a novel drive design featuring radially arranged discs and an axially rotatable sleeve, where the motor drive is connected to the sleeve's outer circumference via a worm gear or belt drive, allowing for rectilinear flow without stagnating zones, reducing pressure loss and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a motor drive is located internally in the flow control part, then the valve structure is compact, but the interior structure becomes complicated and flow resistance increases
Solution Approach 1:
The motor drive is extracted from the internal flow control part and relocated to the external switch housing. This separation removes the complex motor components from the flow path area, simplifying the interior structure while maintaining compact overall design. The drive shaft extends through the valve body to connect the externally located motor to the flow control part.
Solution Approach 2:
A drive shaft serves as an intermediary mechanical element connecting the externally located motor drive to the flow control part. This mediator transmits rotational motion through the valve body without requiring the motor to be internally housed, thus simplifying the interior structure while maintaining drive functionality.
2Device complexity
If a spindle mechanism is used for drive, then the motor can be positioned externally, but the outflow must be deflected through 90 degrees increasing flow resistance
Solution Approach 1:
Instead of using a traditional spindle mechanism that requires 90-degree deflection of the outflow, the invention inverts the approach by using direct axial rotation of the flow control part. The motor drive shaft extends axially through the valve body, allowing the flow to continue in a straight line without deflection, thus eliminating the energy loss associated with flow redirection.
3Device complexity
If the motor drive is positioned externally, then the internal structure is simplified, but the overall valve design becomes less compact
Solution Approach 1:
The drive shaft is nested within the valve body, passing axially through the valve interior without requiring additional external space. The motor is positioned in the switch housing which bears against the valve body, creating a nested arrangement where the drive components are integrated into the existing valve structure rather than adding significant external volume.
4Ease of operation
If a traditional drive mechanism is used, then stagnating zones are created, but the structure becomes more complex
Solution Approach 1:
The complex spindle and gear mechanisms that create stagnating zones are extracted and replaced with a simple axial rotation drive. The motor drive shaft extends directly through the valve body, rotating the flow control part without creating dead spaces or stagnating zones in the flow path, thus improving flow efficiency while simplifying the drive mechanism.
Data Source
AI summary
A motor-driven axial-flow control valve is disclosed that has a valve body with an inlet and an opposite outlet and a passage located between having a substantially axial alignment relative to the inlet and outlet, and a flow control path arranged in the passage with an operative connection to a motor drive in a switch housing resting on the valve body. The flow control valve is formed by two radially arranged discs lying on one another and each having at least one passage opening where one disc is a stator disc permanently arranged in the valve body, and the other disc lies axially rotatably on the stator disk, and the rotatable disc is in engagement with an axially rotatable sleeve that is arranged axially in the passage and through which flow can pass in the cavity of the rotatable disc.